Carriage-lamp.



I. H. ATWOOD.

CARRIAGE LAMP.

.(Applicltion filed Mar. 1O, 1902.)

Patented Oct. 28, I902.

2 Sheets-Sheat I.

(No Model.)

m. 7||,929. Patented Oct. '28, I902.

, I. H. ATWO0D.

CARRIAGE LAMP.

(Application filed Malt. 10, 1902.) (liq Model.) 2 Shasta-Sheet 2.

llil'lil'l'l'l'l'iillI immnllll WIT E5555:

UNITED STATES PATENT FFICE.

IRVING H. ATWOOD, OF AMESBURY, MASSACHUSETTS.

CARRIAG E-LA M P.

SPECIFICATION forming partof Letters Patent No. 711,929, dated October 28, 1902. Application filed March 10. 1902. Serial No. 97.428. (No model.)

To all whom it may concern:

Be it known that I, IRVING H. ATwooD, a citizen of the United States, residing at Am esbnry, in the county of Essex and State of Massachusetts, have invented a new and usefullmprovement in Carriage-Lamps, of which the following is a specification.

This invention relates to that class of carriage-lamps in which the air enters at points near the top of the lamp or lantern, the products of combustion passing out at or near the same points, and the invention relates particularly to that type of carriage-lamps of which the Betts patent, No. 355,297, is an illustration.

My invention has for its principal objects, first, to provide a construction whereby the air passes down from its inlet toward the flame in a passage produced by an outer and inner case instead of between the case and the reflector, thus keeping the air cooler by not bringing it into contact with the reflector (which is heated by the flame) and, by reason of its being conducted to the flame at a lower temperature,improving combustion; second, to combine the smoke-tube with the inner casing by attaching it directly thereto instead of to the reflector, thereby strengthening the lamp and preventing dent-ing of the reflector by the top of the tube coming in contact with any object, as during transportation, and, third, to provide and combine with the base of the wick-tube a wind-guard, whereby the flame is protected from a direct draft, all substantially as below described, and illustrated in the accompanying drawings, in which Figure 1 is a central vertical section of a carriage-lamp embodying my invention, the section being taken parallel with the front of the lamp. Fig. 2 is a front elevation of the lower portion of the carriage-lamp. Fig. 3

is a side elevation of the same, the positionof the door being indicated by dotted lines Fig. 4 is a plan view of the oil-font removed, portions being represented as broken off.

Similar letters of reference indicate corresponding parts.

In this carriage-lamp the casingthat is, the portion which practically surrounds the flame-is double and consists of an outer case A and an inner case B, said outer and inner cases being practically concentric. The outer case is provided at its lower end with a suitable opening A, preferably rectangular in shape, and the inner case is provided with a coincident opening B, preferably circular in shape. The front edges of the two cases A and B are connected and the space between them closed by a suitable circular flange or ring 0, and their rear edges extend back to the rear wall D of the lamp, which is provided with the ordinary window or light D. E represents the reflector, which extends from the ring or flange C rearward to the rear Wall D, said reflector being of the usual shape and being provided at its upper and lower ends with the usual openings E and E", respectively.

The upper portions of the outer and inner cases A and B are provided with openings A and B, respectively, for the accommodation of the smoke-tube H. This smoke-tube is secured at its lower end to the inner casing B, extends up through the opening A in the outer casing, is provided with suitable holes or passages H, and has secured to its upper end a flange h,.surmounted by a cap h. A tube F connects the interior of the reflector with the lower end of the smoke-tube H. Surrounding the smoke-tube and secured to the outer casing A is a tube 1, provided at its upper end with a flange I, raised above the upper end of the tube sufficiently to allow a passage 1 between the flange and the tube. The construction of the tubes H and I, the flanges I and h, the cap 72, and the tube F are not new in themselves considered. The smoke-tube H, however, is in my device attached to the inner casing B and not to the reflector or to the tube F, which extends from the reflector.

Centrally secured to the under side or bottom of the outer casing A is a structure comprising theivertical rectangular outer walls K, the horizontal bottom K, and the circular inner wall K, provided with numerous perforations k. The inner wall K is provided with a top J, from which the cone J extends up through the opening B in the inner casing, the inner wall K of the above-described structure extending up through the opening A in the outer casing, as shown in Fig. 1. L represents the oil-font, provided with a suitable burner L, L being the wicktube, and Z the wick-raiser. This oil-font has secured to its periphery at N a pair of horizontal springs N, Figs. 2, 3, and 4:, which spring outward normally against the springs P, which extend downward from the flange C and the rear wall D of the lamp, said springs being provided with shoulders P, underlapping the springs N, whereby the font L is held normally and securely in the position indicated in the drawings. Surrounding and rigidly secured to thetburner L is a horizontal disk S, which serves as a wind-guard and prevents the air which is fed to the burner from approaching it directly, but causes it to first pass up around the periphery of the wind-shield.

T and T are respectively the frame and glass of the door.

In operation the air passes through the port or space I and inside the inner edge of the flange 1 into the annular space between the smoke-tube H and the outer tube 1, thence down between the outer and inner cases A and B and through the opening A" between the walls K and I and through the perforations into the space below the wind-guard S, and thence around the outer edge of said wind-guard to the flame. The products of combustion pass through the tube F into the smoke-tube H and thence through the annular space between the smoke-tube and outer tube I and the space between the inner edge I and the smoke-tube I into the atmosphere, or directly out through the upper end of the smoke-tube.

Thus the air as it is conducted to the flame does not come in contact with the reflector, and is thereby kept cool until it reaches the flame, thus improving combustion and allowing the use of a larger wick. The flame is prevented from a direct draft and the lamp is strengthened by supporting the smoke-tube directly from the inner casing.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-

1. In a carriage-lamp of the character described, the outer case A and inner case B, practically concentric, said outer case being provided at its lower end with the opening A substantially rectangular in shape and adapted to receive the oil-font, and the inner case being provided at its lower end with the concentric opening B substantially circular in shape and smaller in diameter than the open- 7 ing A, and the upper portions of said cases A and B being provided respectively with the substantially circular openings A and B, said opening A being larger in diameter than the opening B"; the smoke-tube H secured at its lower end to the inner case B at the opening B", formed with the holes or passages H, and provided at its upper end with the flange h surmounted by the cap it; the tube I secured to the outer case at the-opening A and provided at its upper end with the flange I and the passage I between said flange and the inner tube, whereby a downdraft is provided through the passage I" between the flange I and the inner tube, and between the inner and the outer tube through the opening A and between the inner and outer case; and the tube F connecting the interior of the reflector E at its upper opening E with the lower end of the smoke-tube H at its opening 4 B, substantially as and for the purpose set forth.

2. In a carriage-lamp of the character described, the inner and outer concentric cases A and B provided respectively with the substantially circular openings A" and B", said opening A being larger than the opening B"; thesmoke-tube H secured at its lower end to the inner case at the opening B"; the outer tube I having its lower end secured to the outer case at the opening A, said concentric cases A and B being respectively provided at their lower ends with the substantially rectangular opening A adapted to receive the oil-font and the substantially circular opening 13; the structure comprising the vertical rectangular outer wall K, the circular inner perforated wall K provided with a top J extending up through said opening A, and the bottom K connecting the said walls K and K", said wall K extending up against the outer case A outside the opening A; the oilfont provided with a suitable burner and wick-tube extending up through the opening B; and the horizontal disk S operating as a wind-guard and extending from the burner within the said structure for a suitable distance to enable its periphery to be in the path of the downdraft from the cases A and B, substantially as and for the purpose described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

IRVING H. ATWOOD.

' Witnesses:

SALLIE D. DAVIS, WASHINGTON I. Arwoon. 

